LightMetrica vs Google Analytics 4: an honest comparison
Google Analytics 4 is the most widely used analytics tool in the world. It's free, deep and connected to the whole Google ecosystem. LightMetrica is much smaller on purpose. This page lays out the differences honestly so you can pick the right tool — or run both.
At a glance
| LightMetrica | Google Analytics 4 | |
|---|---|---|
| Price | Free | Free; GA4 360 is a paid enterprise version |
| Cookies | None | Yes |
| Script size | About 2 KB | Tens of KB |
| Setup | One line of code | Tag or Tag Manager, plus configuration |
| Interface | One dashboard with the everyday reports | Many reports, explorations and settings |
| Goals | Phone, email, messenger, download and outbound clicks tracked automatically | Many events collected automatically; key events marked in settings |
| Weekly summary | AI Smart Report with 1–3 recommendations | Automated insights in the interface |
| Funnels, segments, audiences | No | Yes |
| Google Ads, Search Console, BigQuery | No | Yes |
| Returning visitors across days | Not measured — by design | Yes |
Where Google Analytics 4 is stronger
- Depth. Explorations, funnels, segments, cohorts, user paths and custom dimensions — GA4 can answer questions LightMetrica simply doesn't try to.
- Advertising. Linking with Google Ads, audiences for remarketing and conversion import are core GA4 features.
- Raw data. BigQuery export gives you event-level data for your own analysis.
- Ecosystem. Search Console, Tag Manager and Looker Studio all connect to it.
If you run paid campaigns at scale or have an analyst on the team, GA4 is hard to replace.
Where LightMetrica is simpler
- No cookies. Visitors are counted with an anonymous daily hash, so there are no analytics cookies to consent to. See cookieless analytics for how it works and what you give up.
- Two-minute setup. Paste one line, and the dashboard shows real visits within seconds. No events to design, no key events to configure.
- Reports you read in one minute. Traffic, sources, pages, devices, geography, goals and real-time — on one screen, with the previous period for comparison.
- AI assistants as a source. Visits from ChatGPT, Perplexity, Gemini, Claude and others form their own group, with no custom channel setup.
- A weekly Smart Report. Every Monday the dashboard explains last week in plain words and gives one to three recommendations: what to check, what to try — or that nothing needs attention.
- Light on your site. About 2 KB of JavaScript.
Do the numbers match?
Not exactly, and they shouldn't be expected to. The tools define visits and visitors differently: GA4 recognises the same cookie for weeks, while LightMetrica counts unique visitors per day. Bot filtering, ad blockers and consent banners also affect each tool differently. Compare trends, not absolute numbers — see visits vs visitors vs page views.
Using both
Many sites run LightMetrica next to GA4: GA4 for marketing and ads, LightMetrica for a quick daily look and the weekly Smart Report — or as an independent second source of numbers. The two scripts don't interfere.
Which one to choose
- Choose GA4 if you rely on Google Ads, need funnels and audiences, or want raw data in BigQuery.
- Choose LightMetrica if you want simple, cookie-free numbers without configuration, and a weekly summary that tells you what to look at.
- Use both if you want GA4's depth without opening it every day.
FAQ
Is LightMetrica a full replacement for Google Analytics 4? For many small sites, blogs and service businesses — yes, the everyday reports are covered. For advertising optimisation, funnels and audiences — no, that's what GA4 is built for.
Can I import my Google Analytics history into LightMetrica? Not at the moment. History import is currently available from Yandex Metrica only.
Will adding LightMetrica slow down my site?
The script is about 2 KB and loads with defer, so it doesn't block rendering.
Try LightMetrica — free
Lightweight, independent, cookie-free analytics: the counter installs in a minute — on its own or next to your current tools. Every week — an AI-powered Smart Report: what changed and what to do next.